"A 1Kg coil of Polycarbonate 3.0 mm filament wound around a sturdy plastic spool. Polycarbonate is an extremely strong, impact resistant thermoplastic. Polycarbonate is a thermoplastic, it's strong and impact resistant (It's used in the making of bullet proof glass and compact discs) temperature resistant and it can be extruded (at the right temperature). It can be bent and formed while cold without cracking or deform and it is also very optically 'crystal' clear to visible light (opaque to UV light), but it's actually not very easy to keep it clear during extrusion, see below -
Don't confuse Polycarbonate with Acrylic or Plexi-glass, they shatter and crack, Polycarbonate tends to just bend and deform and after much effort will eventually stretch like very hard rubber until it eventually breaks.
Polycarbonate has a glass transition temperature of about 150 øC (302 øF), so it softens gradually above this point and flows above about 300 øC
Polycarbonate is an interesting material for 3D printing, it seems to have low warp, strong in filament form so is easily extruded using common extruder drive systems.
PC warps significantly. Do not attempt without a heated bed."
